Updated to expose GRID_CXXLD in addition to CXXLD.

NB: CXXLD required as this is what drives linking behaviour.

configure.ac

@@ -547,6 +547,7 @@ DX_INIT_DOXYGEN([$PACKAGE_NAME], [doxygen.cfg])
 ############### Ouput
 cwd=`pwd -P`; cd ${srcdir}; abs_srcdir=`pwd -P`; cd ${cwd}
 GRID_CXX="$CXX"
+GRID_CXXLD="$CXXLD"
 GRID_CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
 GRID_LDFLAGS="$AM_LDFLAGS $LDFLAGS"
 GRID_LIBS=$LIBS
@@ -561,6 +562,7 @@ AC_SUBST([AM_CFLAGS])
 AC_SUBST([AM_CXXFLAGS])
 AC_SUBST([AM_LDFLAGS])
 AC_SUBST([GRID_CXX])
+AC_SUBST([GRID_CXXLD])
 AC_SUBST([GRID_CXXFLAGS])
 AC_SUBST([GRID_LDFLAGS])
 AC_SUBST([GRID_LIBS])